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Article: Researchers from Old Dominion University describe findings in dielectrics and electrical insulation.
- Article from:
- Electronics Newsweekly
- Article date:
- September 23, 2009
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"Spark gaps, which use water as a switching medium, allow fast closing and high repetition rate operation for high power and high voltage switching. They are usually operated in the pulse-charging mode and have a large jitter," researchers in the United States report.
"To reduce the jitter, a trigger electrode with positive polarity is used to initiate breakdown between a negative high voltage electrode and a ground electrode. The trigger electrode consists of a tungsten wire with a diameter of 50 mu m, enclosed in glass tubing. At the triple point where the three dielectrics (glass, water and metal) meet, the electric field is greatly enhanced. From the triple ...